背景：项目使用mybatis分页插件不生效，以及多租户使用时读取配置异常

分页插件不细述，网上很多方法试了还是不生效，最后修改到当前版本解决，直接上代码

多租户插件使用遇到的问题：

最开始在MyTenantLineHandler中使用 @Value("${tables}"),服务启动时能从配置中心拉取到配置，但在运行时获取到的值为空，试了很多方法都不生效，后面将配置中心的配置在调用MyTenantLineHandler的那一层向下传递配置值，问题解决

租户配置

@Component
@RefreshScope
@ConfigurationProperties(prefix = "saas.tenant")
public class ConfigProperties {public void setColumn(String column) {this.column = column;}public void setTables(List<String> tables) {this.tables = tables;}public String getColumn(){return this.column;}public List<String> getTables(){return this.tables;}private String column="";private List<String> tables= Lists.newArrayList();
}

TenantLineHandler

public class MyTenantLineHandler implements TenantLineHandler {private final ConfigProperties configProperties;public MyTenantLineHandler(ConfigProperties configProperties) {this.configProperties = configProperties;}@Overridepublic LongValue getTenantId() {Long tenantId = TenantContextHolder.getTenantId();return tenantId == null ? new LongValue(-1) : new LongValue(tenantId);}@Overridepublic String getTenantIdColumn() {return configProperties.getColumn();}@Overridepublic boolean ignoreTable(String tableName) {return !configProperties.getTables().contains(tableName);// return TenantLineHandler.super.ignoreTable(tableName);}
}

MybatisPlusConfig

@Configuration
@AutoConfigureAfter(PageHelperAutoConfiguration.class)
//@EnableTransactionManagement
public class MybatisPlusConfig {@Autowiredprivate List<SqlSessionFactory> sqlSessionFactoryList;@Autowiredprivate ConfigProperties configProperties;@PostConstructpublic void addMyInterceptor() {MybatisPlusInterceptor interceptor = mybatisPlusInterceptor();for (SqlSessionFactory factory : sqlSessionFactoryList) {factory.getConfiguration().addInterceptor(interceptor);}}/*** mybatisplus 分页拦截器* @return*/public MybatisPlusInterceptor mybatisPlusInterceptor() {MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();interceptor.addInnerInterceptor(new PaginationInnerInterceptor());TenantLineInnerInterceptor tenantLineInnerInterceptor=new TenantLineInnerInterceptor();tenantLineInnerInterceptor.setTenantLineHandler(new MyTenantLineHandler(configProperties));interceptor.addInnerInterceptor(tenantLineInnerInterceptor);return interceptor;}
}